30021144311 has 4 divisors (see below), whose sum is σ = 30031091400. Its totient is φ = 30011197224.

The previous prime is 30021144281. The next prime is 30021144331. The reversal of 30021144311 is 11344112003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30021144311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021144331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4969016 + ... + 4975053.

It is an arithmetic number, because the mean of its divisors is an integer number (7507772850).

Almost surely, 2^30021144311 is an apocalyptic number.

30021144311 is a deficient number, since it is larger than the sum of its proper divisors (9947089).

30021144311 is an equidigital number, since it uses as much as digits as its factorization.

30021144311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947088.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30021144311 its reverse (11344112003), we get a palindrome (41365256314).

The spelling of 30021144311 in words is "thirty billion, twenty-one million, one hundred forty-four thousand, three hundred eleven".